Test of Variables of Attention (T.O.V.A.™), a computerized test of attention that assists in the screening, diagnosis, and treatment monitoring of attention disorders, like Attention Deficit Hyperactivity Disorder (ADHD).

The T.O.V.A. is an objective, neurophysiological measure of attention, not a subjective rating of behavior. It is a 21.6 minute long, very simple "computer game" that measures your responses to either visual or auditory stimuli. These measurements are then compared to the measurements of a group of people without attention disorders who took the T.O.V.A.